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Thermo Scientific Chemicals
Methyl Red sodium salt, ACS
CAS: 845-10-3 | C15H14N3NaO2 | 291.286 g/mol
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Catalog number 036667.14
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36.65
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Ends: 30-Jun-2026
42.40Save 5.75 (14%)
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Quantity:
25 g
Price (USD)
36.65
Special offer
Online exclusive
Ends: 30-Jun-2026
42.40Save 5.75 (14%)
Each
Chemical Identifiers
CAS845-10-3
IUPAC Namesodium 2-{2-[4-(dimethylamino)phenyl]diazen-1-yl}benzoate
Molecular FormulaC15H14N3NaO2
InChI KeyGNTPCYMJCJNRQB-UHFFFAOYSA-M
SMILES[Na+].CN(C)C1=CC=C(C=C1)N=NC1=CC=CC=C1C([O-])=O
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Specifications
Specification Sheet
Specification SheetCommentClarity of alcohol solution P.T.
CommentClarity of aqueous solution P.T.
CommentVisual transition interval from pH 4.2 (pink) to 6.2 (yellow)
Methyl Red sodium salt is used as a pH indicator. In microbiology, it is used to make agar plates in bacteriology. Further, it is used as a coloring agent and also finds use in mouthwash, toothpaste and in cosmetics. It is also employed as a rocket propellant. In addition to this, it is used in the preparation of reversible stain for rapid detection of stained cells in each specimen.
This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.
RUO – Research Use Only